Machine for inserting fastenings.



P. R. GLASS.

, MACHINE FOR INSERTING FASTENINGS.

APPLICATION FILED FEB. 17, 1915'- 1 ,199,887. Patented Oct. 3,1916.

2 SHEETS-SHEET 2.

i STATES OFFICE.

PERLEY B. GLASS, 0F BROOKLINE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEIMIAGHINERYv COMPANY, OF PA'IERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

MACHINE FOR INSERTING FASTENINGS.

Patented Oct. 3, 1916.

Original application filed March 9,1910, Serial No. 548,139. Divided andthis application filed February State of Massachusetts, have inventedcertain Improvements in Machines for Inserting Fastenings, of which thefollowing description, in connection with the accompanying drawings, isa specification, like reference characters on the drawings indicatinglike parts in the several figures.

This invention relates to machines for inserting fastenings andparticularly to fastening feeding mechanisms for use in machines of thetype in which previously formed fastenings are assembled and deliveredsuccessively into position to be operated upon by the fasteninginserting mechanism. V r a An object of the invention is to provide animproved fastening assembling and delivering mechanism which can berelied upon to furnish an uninterrupted supply of fastenings to thefastening inserting mechanism.

Another object of the invention is to provide a fastening assembling anddelivering mechanism of such simple and compact construction that itsparts may conveniently be duplicated for use in conjunction with amachine for inserting a plurality of individual nails at a singleoperation, as for example, in conjunction with a machine of the typeshown and described in United States Letters Patent No. 1,132,926granted Mar. 23, 1915 on application of Perley R. Glass. 7 I

In fastening feeding mechanismsof the type herein shown as heretoforeconstructed a positively operated fastening lifting device lifts thefastenings from a mass and deposits them upon a shelf leading to theraceway or directly upon a raceway down which they gravitate to theinserting mechanism. In such constructions clogging of the mechanism andinjury to the fastenings fre-v quently occurs owing 'to the lack ofpro.- visions for readjustment of the parts in the event that amisplaced fastening is encountered after the lifting movement begins.

A particular object of the invention, therefore, is to provide afastening feeding mechanism in which such clogging of the mechanism andinjury to the fastening is prevented and particularly to provide afastening feeding mechanism having provisions for disconnection of thefastening lifting devlce from its operating means when unusualreslstance is encountered, such as a misplaced nail, during itsoperative or fasten-- ing lifting movement.

Other objects and features of the invention will now be set forth inconnection wlth the description of the mechanism shown in theaccompanying drawings and will then'be pointed out in the claims.

Figure 1 is a'front elevation of a machine in which'the invention ispreferably embodied; Fig. 2 is a perspective view partly in section of apreferred embodiment of the nail feeding mechanism of this invention.

For convenience in understanding the invention the reference charactersemployed in the following description will be the.

same so far as practicable as those employed in designating like partsin the, above mentioned patent to which reference should be had for acomplete understanding of the construction of the machine in which'thisinvention is preferably embodied. As fully explained in said patent thenails are delivered to the nail block, from which they are driven by thegang of drivers, by a nail loader.- 162 carried on the outer end of anarm 164: of a lever fulcrumed upon the rock shaft 112, through whichlever the nail loader is moved between nail receiving p0 sition and naildelivering position. f

The means for supplying nails to the nail loader when in nail receivingposition comprises a plurality of flexible nail tubes 268 one for eachnail opening in the nail loader, these tubes guiding the nails from acor; responding plurality of raceways 270 -into openings in a-platearranged above. the corresponding openings in the nail loader when it isin nail receiving position. Cooperating with each of the raceways is anail separator 274 which has a "yielding pin and slot connection 278,275 with a common separator bar 27 6 through which all of the separators280 upon the machine frame and havingan end 281 arranged to be engagedand lifted by the lever arm 164 as the nail loader comes into nailreceiving position. Pivotally connected to the lever 278 intermediateits ends is a rod 282 the upper end of which is adjustably confined in aslot 283 in one arm of an angle lever 284 pivoted at 285 to the frame,the other arm of the lever being forked to engage a pin 287 on the side276.

The raceways are supplied with nails by segmental lifting plates 286,one for each raceway, which travel in guides 289 in the Walls of a nailpot or holder 288, the plates 286 passing through openings in the bottom290 of the nail pot and being carried upon arms 292 loosely mounted uponthe rockshaft 294. Rigidly attached to the rockshaft 294 is a crank arm296 to the outer end of which is connected a rod 298.

I The rod 298 receives at its lower end a wrist pin 300 which isadjustable in a dovetailed groove 302 in a crank wheel 304 upon across-shaft 306. The shaft 306 is driven by a worm and gear wheelconnection 310, 308 with the shaft 188 which receives its motion from adriving pulley 190 connected by a belt 192 with a suitable source ofpower.

Rotation of the shaft 306 effects, through the rod 298, an oscillationof the lifting plates 286 with the shaft 294. The connections betweenthe shaft 294 and the lifting plates 286 comprise a pawl carrying arm312 rigidly attached to the shaft 294 and having pivoted at 314 a pawl316 which is pressed by a spring 318, located between a downwardprojection of the arm 312 and the back side of the pawl, toward a catchy 320 upon the arm 292. The pawl and catch 40 are so shaped that if thelifting plate in its upward movement meets an obstacle, such as amisplaced nail, the pawl 316 will slip over the catch 320 and permit theplate to drop back to its lowermost position. This position ispreferably determined by an adjustable stop which engages a portion ofthe machine frame comprising a bolt 322 confined by nuts in an offsetportion 324 of an arc-shaped supporting bar 326 attached to the bottom290 of the nail pot and extending along the path of movement of thelifting plate 286, there being one of these stop supporting bars foreach lifting plate. The shaft 188 is preferably constantly rotated andthe lifting plates 286 are therefore constantly oscillated with theshaft 294, between nail receiving positions in the bottom of the nailpot and nail delivering positions in alinement with the raceways, thuskeeping the raceways 27 0 supplied with nails.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is 1. In a nailingmachine, a nail holder, a plurality of nail lifting plates guided insaid holder, a plurality of raceways opening through said holder intowhich said lifting plates are arranged to deliver nails, a single meansfor operating said lifting plates, and means for connecting each of saidlifting plates to the operating means con.- structed to permitdisconnection of said parts when unusual resistance is encounteredduring its movement into nail delivering position.

2. In a nailing machine, a nail holder, a nail lifting plate guided insaid holder, a raceway opening through said holder into which saidlifting plate is arranged to deliver nails, and means arranged to. movesaid lifting plate yieldingly into position to deliver nails to theraceway, said means being provided with a safety release whereby themovement of the lifting plate into nail delivering position isinterrupted when unusual resistance is encountered during its movementinto said position.

3. In a nailing machine, a nail holder, a nail lifting plate guided insaid holder, a raceway opening through said holder and into which saidlifting plate is arranged to deliver nails, means for operating saidnail lifting plate, and means constructed to in sure the automaticdisconnection of the lifting plate from its operating means when unusualresistance is encountered during the upward movement of the liftingplate.

4. In a nailing machine a stationary nail holder having concentricallycurved front and rear walls, an oscillating segmental nail lifting plateguided between said walls, a raceway opening through one of said wallsinto which said lifting plate is arranged to deliver nails, means foroscillating said lifting plate, and means constructed to insure theautomatic suspension of further upward movement of the lifting platewhen unusual resistance is encountered during its movement into naildelivering position.

5. In a nailing machine, a nail holder having concentrically curvedfront and rear walls, a plurality of segmental lifting plates guidedbetween said walls, a plurality of raceways opening through one of saidwalls into which said lifting plates are arranged to deliver nails,means for operating said lifting plates, and means for predeterminatelycontrolling the nail lifting power of said lifting plates independentlyof the power applied to said operating means.

6. In a nailing machine, a nail holder having concentrically curvedfront and rear walls, a plurality of segmental lifting plates guidedbetween said walls, a plurality of raceways opening through one of saidwalls into which said lifting plates are arranged to deliver nails, anda single means for operating said lifting plates.

7. In a nailing machine, a nail holder having concentrically curvedfront and rear walls, a plurality of raceways opening through one ofsaid walls, a corresponding plurality of segmental lifting plates guidedthrough openings in the bottom of said nail holder and arranged to bemoved between nail receiving and nail delivering positions about an axislying outside of said holder to deliver nails to said raceways, arockshaft for operating said lifting plates and connections between eachof said lifting plates and said rock-shaft constructed to be interruptedwhen unusual resistance is offered to the upward movement of said plate.

8. In a nailing machine, a nail holder, a

nail raceway opening into said holder, a

lifting plate provided with a nail guiding groove which, when said plateis in its uppermost position, forms a continuation of said raceway, andmeans for moving said lifting plate from nail receiving into naildelivering position constructed and arranged to permit said liftingplate to drop back to' nail receiving position before it reaches thenail delivering position in case of clogging.

9. In a nalling machine, a nail holder hav- 1ng concentrlcally curvedfront and rear walls, a raceway opening through the wall having theshorter radius of curvature, a

said lifting plate between nail receiving and nail delivering positions.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PERLEY R. GLASS.

Witnesses:

, HENRY KAHLMEYER, WILLIAM B. KING.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0. v

